As a highly efficient thermodynamic cycle formed by pure natural fluid and using
aerothermal energy, transcritical CO 2 technology has huge advantages in terms of energy …

Water heating represents significant energy use in residential applications. Therefore,
energy efficient water heating is an essential component to achieve national energy saving …

Frosting has always been a crucial problem for air source heat pumps (ASHPs) operated in
heating mode. Quantitative evaluation of frosting is of vital importance to the development of …

Electric heat pumps offer a promising opportunity to help achieve deep decarbonization of
the building sector. However, since electric generators serve load in real time with varying …

Many related studies suggested that a fixed airflow direction usually led to that the most frost
would only deposit on the windward side of finned tube heat exchangers (FTHXs) of the …

Heat pump technology has gained surging interests due to its abilities in reducing the
battery burden of the electric bus. Here, three heat pump systems for an 8 m bus are …

We estimate the emissions of the two most important greenhouse gasses (GHG), carbon
dioxide (CO 2) and methane (CH 4), from the use of modern high‐efficiency heat pump …

Residential water heating is among the most energy-intensive aspects of the water sector;
however, residential hot water use is often poorly quantified. Estimating hot water …

Although water heating accounts for 14% of residential electricity usage, the impacts of
different water-heating technologies on greenhouse gas emissions are poorly quantified …

Heat pump water heaters (HPWH) are classified as renewable energy efficient technologies
and have had a high market penetration in South Africa since 2008. The market of this …